.index {
  width: 100%;
  height: 100%;
}

.index div {
  width: 100%;
  height: calc(100vh - 50px);
}

.index .footer {
  width: 100%;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: pink;
}

.index .footer a {
  color: #000;
}

.index .footer .active {
  color: red !important;
}
